Compressor-condenser unit HITACHI

Wide range of products:

✅Mini units for private houses and small architectural structures
✅Modular units allowing systems with a capacity of up to 255 kW to be configured for commercial buildings and medium- and large-scale architectural structures.
✅Heat recovery systems for hotels and buildings with increased energy efficiency requirements.
✅Wide selection of indoor units.

Features:

The basis of the Aerostar VRF system is a Mitsubishi twin-rotary inverter compressor

•High-efficiency and reliable Mitsubishi inverter compressor;
•The twin-rotary design provides an optimal balance between performance and reliability;
•A specially designed chamber in the lower part of the compressor reduces vibration;
•The built-in liquid separator reduces the risk of liquid returning to the compressor, increasing reliability;
•The built-in oil separator is one of the oil return stages and increases system reliability.

Fan – better balanced, quieter, more efficient.

•The high-efficiency brushless DC motor improves heat dissipation efficiency while reducing noise levels;
•The fan rotation speed is optimized according to external conditions and system requirements to achieve the best balance between heat dissipation and energy consumption;
•The large impeller increases airflow for better heat dissipation from the condensers, while the blade design reduces noise and eliminates imbalance to prevent additional vibrations.
•20% lower energy consumption compared to AC motors

Condenser – better heat dissipation, higher energy efficiency
•Optimized heat exchangers with Y-shaped refrigerant flow, grooved copper tubing, cross-flow hydrophilic foil, separation of hot and cold pipes, and sub-cooling technology all improve heat dissipation performance.
•The Y-shaped refrigerant flow increases the liquid flow path length, improving heat exchange efficiency.
• The cross-flow hydrophilic foil improves heat exchange by distributing airflow and removing condensate.
•The grooved copper tubing increases the refrigerant heat exchange area, improving condenser efficiency.

Equipment protection – a guarantee of reliability:

•Redundancy function: 
Unit redundancy: When one unit fails, the second continues operating the system;
Compressor redundancy: When one compressor fails, the second continues operating;
Fan redundancy: When one fan fails, the second continues operating.

•Refrigerant cooling technology:
A liquid refrigerant tube runs through the power control board to ensure reliable board cooling, allowing the unit to operate at temperatures up to +55℃.

5 STAGES OF OIL RETURN CONTROL

1. Separator integrated into the compressor
2. Oil equalizing pipe between compressors
3. Additional high-efficiency oil separator integrated into the unit
4. Oil equalizing pipe between outdoor units via the refrigerant pipe
5. Oil return programmer for monitoring the oil level in each module

AEROSTAR VRF SYSTEMS — EASY INSTALLATION AND RELIABILITY

• Unit location identification

During commissioning, the units emit sounds corresponding to the same system, making it easy to identify the location of units belonging to one system during commissioning and start-up works at the facility.

• Easy indoor unit servicing

When one indoor unit fails, the remaining units continue to operate. The failed unit can be switched off and repaired without affecting the operation of the other units.

• Black box

The outdoor unit is equipped with a «black box» that automatically records and stores all system operating data and error information.

• Simple configuration

There is no need to manually assign an address to each indoor unit (except for BMS). When the system starts, it automatically assigns an address to each indoor unit. One button is enough to start and test the entire system.

• Service window

The advanced diagnostic system quickly reads information from the entire system and displays it in the service window. Information can be retrieved quickly and easily.

AEROSTAR VRF SYSTEMS – COMFORT, SAFETY, ENVIRONMENTAL FRIENDLINESS

Wide operating temperature range optimized for operation in Central Asia

Cooling mode: -5℃ ~ 55℃
Heating mode: -15℃ ~ 30℃

MODES:

Night operation mode

The night operation mode reduces energy consumption and noise levels at night and automatically exits this mode in the morning. Noise reduction of up to 10dB(A).

Energy-saving mode

• Energy-saving mode for artificially reducing energy consumption during peak network loads, when using a limited-capacity power line, or when using power generators.
• 7 energy-saving levels from 40% to 100%

Priority mode
6 heating/cooling priority modes:

• Auto
• Heating priority
• VIP indoor unit priority + Auto
• Cooling priority
• Heating only
• Cooling only

AEROSTAR VRF SYSTEMS — A WIDE RANGE OF PRODUCTS

Wide selection of indoor units